Inheritance: extends Model, use trait Stevebauman\Inventory\Traits\SupplierTrait
 /**
  * Update the specified resource in storage.
  *
  * @param  int  $id
  * @return Response
  */
 public function update($id)
 {
     $input = Input::all();
     Supplier::find($id)->update($input);
     return Redirect::route('supplier.index')->with('message', 'Supplier record updated.');
 }